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' titre( frJ. Roer' Anon.' L. roer, orjsnnovnni. onio, AssiGNons'To 'moms' f noo'nbr 'ri-1s einen Pinion; Lrm-s Patent No, 67,313, ma my@ 2o, ist?.

Inliner/ED finir-HAMMER..

TO ALL WHOM IT MAY CONl'JllRN: l

Y it known that Awe, T.J. Roorand It. L ROOT, both of Andover, in the coun-ty of Ashtabula, and State of Ohio, have invented certain-honi and useful additional virnpro'vernentsin the '.lripll'lammer for blacksmiths use, for which Letters Potent of the United States were'grnntod to thesaid T. J.'RQOT on the 7th ofFehrnary, 1865; and wc do herebyrdeclare that-the following is Va. full and cyr-ct dcseriptionof` `the said improvenments,V reference beinghud to the accompanying drawings, in whiclr-4 l U Figure 1 is a'side elevation` of the `whole machine. Figure 2 a; top view of the treadle arrongernent for operating the same.

' Figure 3 represents the body ofthe machineqvith a, p'ortion'of the legs which support it, showing a portion, -of the vertical shaft and the vibrating arm, hereafter referred to.

IFigure 4 exhibits said vertical shaft with the longitudinall groove therein, as will be explained, and

' Figures 5,6,and 7 are the'details of the setting-lever, hereafter referred to, iigs. 5 and being top views', and iig; 7 an elevation. l

The sa-meietters of reference indicate similar parts-'in all the figures.

f Our said improvements 'consist of the folloiring:

First. S-upportingthe rock-shaft or rock-head B, of the Voriginal machine, in, n'vibrating'head provided with a verticnlishaft, insteafd of the stationary head 4before used, and Yconnecting said vibrating shaft, by means of a vibrating rod attached thereto, `to the troedle by which the hcmmeris operated l i i v Second. The application offs. lever arrangement to the said vibrating shaft, so thatthe hammenhead can be moved ltex-elly, right or'leit, to cause it tostrike on eny'part of thennvl.

Third. The application of the hellend-socket `ioint to the bearings of the said-vibrating rod und rod H oi" i the first machine, so that when said vibrating shaft is turned right and left, as before stated, the bearings will work in unison therewith, thus obviating strain or binding ofthe said bearings. i

Fourth. Arranging the bearings of the said vibrotingrod and rod H on either side oi' the fulcrum of the treadle, nndlin such manner" that the one or theothercari be shortened or lengthenedA Awith respect to seid` fulcrum, for the purpose of balancing or equnlizing the rhotion oi" the treadl so as tovoause it'to bc worked with as little eil'ort ,on the partei' the operator als may be necessary.

vThe following description will enable others skilled in the art to construct and use our said improved machine. i y .Y y

Y A,i.iig. 1, is thebody of the machine snpportedonjfour legs. C' D are two ties (one onlyseen) placed vbetween enchf pair of 'legs oneopposite the other,Y on the lower pnrtiof the machine. Enis e heed attached to o 'vertical shaft, F. )nV the upperl pait df .the said head is'ltlie rock-shaft `orrock-heod B of the former machine, carrying the hammerfhcdle Cof the harnmor D. On the lower part of said 'shaft F1, iig. 3, is e vibrating rod, Gif Said rod has the ball of hall'fehdsockot bearing Hl fitted to it, so as to be shifted up or down, und to which it is retained by a. 'set-screw, I Rig. il, istho lengthoned rod of; the original machine. Ori'its Vlower end `ie fitted, in like manner, asimilar ball, Hf, and is also retained fin place by oset-screw', J'. V'lhenpper end of said rod is connected'withthe bent arm I, Vas before.` The spiral spring J, instead of .enclosing the rod H, as in the other moohine,.is placed betweenit and 'the body A, 'ond is attached at its lower end to a' short rod, LH, which passes through a. holein atie, M, shown' bythe ,dotted lines, inwhich it .is secured by c. set-screw, Ni The upper part of' said spring is connected withthet-op of the arm H, as seen. T, fig. 1, is a. short lever. Its construction is shown inv ign. Y nside its annular portion isa. projection, T1. On theshoi't Fl, ofthe vibroting head E, is n. longitudinal groove, T2, fitting the Vsaid projection T1. In the under sideef the body Ais o sunk 'circnlar recess (not shown) whichreceives tlie said annular portion oi' the lever T, 'and is confined therein byu plate, T3, g. Said lever will now be free to ivork right and'left, :is may be desi-r'ed,-retainin`g its set positionw by means ofthe springU, catching in the toothed plateU'. The trecdle Flig. .2, is supported in i,ournul hoxes, P, onthe pair oi' ties D', iig.V 1, by a rock-shaft O, iig. 2. On'eaoh side of said rock-shaft O are placed thebearings (R R and S S) ofthe bells ofthe `vibrating rod G, and the 'lengthened rod H, and consist of boxes with opposite concave depressionsr--itting said bells. Thosoiid bearings R Ii. and S S V,are arranged so as they can be shifted towards or'from the roch-shaft O for th purpose of adjustment, and are, secured bymeansiof'setscrews, as seen.. y i

The machine is operatedbytherfo'ot o t`,the'\'worl n1 an applied to the treadle.v Itis pnt inzorder for general i y "s R R ands S from the fulcrum of the'treadle.' In

tbenext placefthe'vibratin'g'arm Gand arm' H-lare to be adjusted by moving .them ,up and'loivn in,l the balls,

and vsecuring-them in their respective placesby the set-screws IandJ iu'such manneras to allow the face oi' v the hammer to nearlytouch the face 'of the anvil. The coiled spring J is then adjusted bythe rod and seti screty N, .so as to inipart'to'it the necessary tension .for carrying' 'upand sustaining the .hammer and treadle after strikingthe'blow. Themacbine thus set will bein condition for general work, as before stated, that is,

for striking on material of medium-thickness. But when extra'nthicknesses, sny'four inches,`n .re to. he operated on, the rods G and H will thenhave to be adjusted in the wn y described, so as ytovh'ave the'force of the blow at that distance fromtbe an vil.4 B v turning the lever T-hori` zontally it will lie-seen that the hammer can be made` to strilr-e"several inches to the right vor left of the centre of the.anvl,' and that the movement of the ball-andsocket hearings will conform tothis change; thereby obvia'ting any'strain or undue friction. Another advantage 1 of the head E is that of giving momentum'and percussion to the 'descending blow-of thehammer by meansvoiv its gravity., The s hort or bent arm I of the rock-head B possesses, as will be seen, a lever-power in cennection with the rod H as it rises, in throwing the hammer, down with additional force.y V

`What we claim as our invention,l and desireto secure by Letters Patent, Iis- 1. Weclaim the vibrating hea'd E, grooved vertical shaft F, and vibrating rod Gr, :in-combination with the rock-head B and treadle F2, as and for the purpose specified. i i

2. The lever T, constructed as described, grou-ved shaft F1, toothed plate U', recess in head A, as described, and plate T3, in combination with tbe vibratingrod G, ball Hl, set-screw I', and bearings S, arranged so as to operateas and for the purposespeeiiied.' f l I 3. The ball II2 and set-screw l', (applied to the rodIL) bearings R, andtreadle l, in combination with the subject-matter of the second claim, as herein stated.

4'. The combination-.of the adjustable bearings R R and S S, vibrating rod G, and rod H, with the Vroc'kshaft O and Vtreadle E", so as Vto operate substantially in .the manner and for the purpose specified.

' i I l T.' J. ROOT,

R- L- ROOT.. Witnesses:

.. J. F. SINGLE, M. S. HARVEY. 

